/*
 * Copyright (c) 2000 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de
 * Recherche en Informatique et en Automatique, Keio University). All
 * Rights Reserved. This program is distributed under the W3C's Software
 * Intellectual Property License. This program is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.
 * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
 */
using System;

namespace org.w3c.dom
{

    /**
     * The <code>DOMImplementation</code> interface provides a number of methods 
     * for performing operations that are independent of any particular instance 
     * of the document object model.
     * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113'>Document Object Model (DOM) Level 2 Core Specification</a>.
     */
    public interface DOMImplementation
    {
        /**
         * Test if the DOM implementation implements a specific feature.
         * @param featureThe name of the feature to test (case-insensitive). The 
         *   values used by DOM features are defined throughout the DOM Level 2 
         *   specifications and listed in the  section. The name must be an XML 
         *   name. To avoid possible conflicts, as a convention, names referring 
         *   to features defined outside the DOM specification should be made 
         *   unique by reversing the name of the Internet domain name of the 
         *   person (or the organization that the person belongs to) who defines 
         *   the feature, component by component, and using this as a prefix. 
         *   For instance, the W3C SVG Working Group defines the feature 
         *   "org.w3c.dom.svg".
         * @param versionThis is the version number of the feature to test. In 
         *   Level 2, the string can be either "2.0" or "1.0". If the version is 
         *   not specified, supporting any version of the feature causes the 
         *   method to return <code>true</code>.
         * @return <code>true</code> if the feature is implemented in the 
         *   specified version, <code>false</code> otherwise.
         */
        bool hasFeature(String feature,
                                  String version);

        /**
         * Creates an empty <code>DocumentType</code> node. Entity declarations 
         * and notations are not made available. Entity reference expansions and 
         * default attribute additions do not occur. It is expected that a 
         * future version of the DOM will provide a way for populating a 
         * <code>DocumentType</code>.
         * <br>HTML-only DOM implementations do not need to implement this method.
         * @param qualifiedNameThe qualified name of the document type to be 
         *   created. 
         * @param publicIdThe external subset public identifier.
         * @param systemIdThe external subset system identifier.
         * @return A new <code>DocumentType</code> node with 
         *   <code>Node.ownerDocument</code> set to <code>null</code>.
         * @exception DOMException
         *   INVALID_CHARACTER_ERR: Raised if the specified qualified name 
         *   contains an illegal character.
         *   <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is 
         *   malformed.
         * @since DOM Level 2
         */
        DocumentType createDocumentType(String qualifiedName,
                                               String publicId,
                                               String systemId);//                                           throws DOMException;

        /**
         * Creates an XML <code>Document</code> object of the specified type with 
         * its document element. HTML-only DOM implementations do not need to 
         * implement this method.
         * @param namespaceURIThe namespace URI of the document element to create.
         * @param qualifiedNameThe qualified name of the document element to be 
         *   created.
         * @param doctypeThe type of document to be created or <code>null</code>.
         *   When <code>doctype</code> is not <code>null</code>, its 
         *   <code>Node.ownerDocument</code> attribute is set to the document 
         *   being created.
         * @return A new <code>Document</code> object.
         * @exception DOMException
         *   INVALID_CHARACTER_ERR: Raised if the specified qualified name 
         *   contains an illegal character.
         *   <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is 
         *   malformed, if the <code>qualifiedName</code> has a prefix and the 
         *   <code>namespaceURI</code> is <code>null</code>, or if the 
         *   <code>qualifiedName</code> has a prefix that is "xml" and the 
         *   <code>namespaceURI</code> is different from "
         *   http://www.w3.org/XML/1998/namespace" .
         *   <br>WRONG_DOCUMENT_ERR: Raised if <code>doctype</code> has already 
         *   been used with a different document or was created from a different 
         *   implementation.
         * @since DOM Level 2
         */
        Document createDocument(String namespaceURI,
                                       String qualifiedName,
                                       DocumentType doctype);//                                   throws DOMException;

    }
}